Detector for bobbins with rings controlled by box motion



Dec. 6, 1927. I 1,651,565

. W. H- WAKEFIELD DETECTOR FOR BOBBINS WITH RINGS CONTROLLED BY BOX MOTION Filed Dec. 30, 1924 Patented Dec. 6, 1927.

UNITED STATES PATENT OFFI E.

WALTER WAKEFIELD, or WORCESTER, MASSACHUSETTS, ssrenon To CROMPTON exnowms LOOM worms; OF'VJOBCESTER, MASSACHUSETTS, A' CORPORATION OF MASSACHUSETTS.

DETECTOR FOR BOBBINS WITH RINGS CONTROLLED BY BOX MOTION.

Application filed December 30, 1924. Serial No. 758 906.

This invention relates to improvements in detectors for use with a plurality of shuttles to, detect the. condition of the yarn therein. and more particularly to a detector vrendered more sensitive when cooperating with a Shuttle provided with fine yarn than'when cooperating with a shuttle provided with coarse yarn. My present invention, relates more. particularly to the type of detector whichcooperates with a movable member on the bobbin. I

It is the general object of my present invention to provide a detector of the type Specified having provision for varying the pressure of the detector against the movable member on the bobbins. I

It is a further object of my invention to provide a weft detector which will normally retain thesame setting for all degrees of Sensitiveness thereof.

With these and other objects in view which will appear asthe description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in, the claims;

A preferred form of my invention is shown in the drawings in which Fig. 1 is a plan view of my mechanism,

Fig. 2 is aside elevation thereof," Fig. 3 is a detail plan view showing the action of the detecting member when the improved weft is substantially exhausted,

Fig. 4: is a front elevation of a portion of a loom having my inventionapplied thereto, and i Fig. 5 is an enlarged horizontal section on line 55 of Fig. 1.

Referring to the drawings, I have shown parts of a weft detecting mechanism similar in general construction. and method of operation to that found in the Ryon' Patent No. 972,722, issued October 11, 1910.

, The parts shown comprise a detecting.

member beveled on the rear end thereof and slidable ina casing .11, adjustably Secured upon a bracket 12 supported by the loom side L. At its forward end, the member 10' is connected by a link 13 to an arm 14 adjustably secured toa cross rod15 supported .in bearings 16 17 on the bracket 12. A spring 18 on the rod 15 presses the arm 14 rearward, causing a stop screw 19 to normally engage the front face of the casing 11.

A controller rod 20 is pivoted on a second arm 21 secured to the cross rod 15. The rod 20'normally extends into or across a groove or slot 22 in an upward projection 23 of the bracket 12. A lever 24 is mounted 'for vertical movement in the slot 22 and will engage the rod 20 on its downward movement unless the latter is withdrawn from the slot 22 by the action of the detecting member 10. Engagement of the rod 20 by the lever 24 indicates substantialweft exhaustion and initiates a change in the op' eration of the loom, such as a transfer of weft carriers.-

The Weft carrier W is of special construction, and as shown in Figs. 1 and 3, adjacent its head 25, is provided with a cylindrical body or barrel portion 26' (Fig. 3), a part of which is provided with grooves 27 or is otherwise roughened for a specialpurpose.

A plurality of beveled rings 28 are mounted to slide freely on the barrel 26 and an additional sliding member 30 is also mounted thereon. The member 30 has a beveled head or flange 31 and also has a cylindrical'shank orhub portion 32 slidabl'e on the barrel 26. The surface of the part 32 may also be grooved or roughened as indicated at 29 in Fig. 3-.

On one or both sides of the hub 32, n opening or slot 33 is provided, and a stud 3A is inserted in the barrel 26 within one of the openings 33 to limit sliding movement of the member 30.

When the" weft or filling is to be wound on the weft carrier, the rings 28 and sliding member 30are seated against the head 25 as Shown in Fig. 1. The openings 33 are pref erably of such circumferentialwidth that the first layers of filling F will engage the grooves 27 in the roughened Surface of the barrel 26, as well as the grooves 29 on the hub 32, thus holding the sliding rings from displacement. I 7 I The parts are so positionedin the loom that the detecting member 10 is engaged by the rings 28 or the flange 31 as the weft'carthe member 10,exerted against the rings 28 and the flange 31. then eeparatenthree parts as ehown in Fig. 3. permitting the member 10 to enter between the rings and thus remain unmoved from rearward poei tion. The rod .20 istlius lel'tintlie path of the lever 24 and Weft exhaustion is indisated. The abrupt and nntterialchangg'e in necessity for close adjustment.

diameter when the rings slip also avoids the The matter thus far described is siniilar to the detertor set forth in Patent No. 1502413 to 'Iurner.

My invention relates niore portionlarly to the applieation oi the above 'teeler to a box 100111 and by referring to Figs. 1 and i, it will be seen that I. have provided means to vary the pressure of spring 1th l ter-erring to Fig. 1 it will be torn that the shall 15 has adjustablysecured thereto a dollar 50 which receivesione endot the spring 18 and also has mounted thereon an arm til ivhich reeeivesthe othorend ot' the apt-mg 1S. aid arin being pivotally connected to a rod head 52 as at 523. The spring; 18 nori'ilally tends to lift the inner end of the arm 51 and also tends to hold the controller 20 under the floating lever 12- a i y In order to vary the measure oi the Sliding detector 10 I vary the position of the arm 51 so that the sure exerted on said arm by the collar fidwill be tyrt-aattul" under certain conditions than tinderothers. lhe niechanien'i for nioving the arin 51 vertically is shown in Figs. 1. 2; and 4-, where it will be seen that a rocker shalt h-l is rotatablv mounted in the frame L andhas theretoa picker foot 55. i

A box rod 58 of any approved construction carries at the upper end thereof a multiple of boxes l tour boxri t beings; .ehoirn in the present instance: Seoul-rd to the bolt rod is an arm Bl the upper end of which is connected as at 58 to a slidebtl, the lower end of the slide being guided in a bearing tithaaid slide bar being held in the bear-- ll'lg by plates 61. The bearing is FUClil'ttl to the picker foot: so that the box rod, slide, and bearingniovo as a unit about the secured rocker shaft 54. t i

The mechanism for determining when the pressure of the detector WlleS should be reduced or increased CODTPI'li s a lever (32 pivoted as at 63 to the picker foot and provided with a facetit which is nornlally held toward the slide blok. 59 by means of spring 18. Kenn ably seouredto the nlide block are tappets 65 said tappets being the same height when it is desired to have buttwo degrees of pressure or being of variable heights when it is sure. Attaehed to the loiver end of the lever ($2 l5 a flexible connector (Sh which extends aerose the .lUOlll and around a aheave (3T desired to have more degreee ot pres and has the upper end thereof connected woven The "force therefore tending tonlove the slide 30 lolnritiulinally alongthe bobbin will vary according to the characterof yarn wound on the bobbin. i

llronr the foregoing it Will be seenthat I have provided means for varying the nes-j sure oi the detertor against the rings on the bobbin to make said detedtor more sensitive when wearing lino yarn than when Weaving (:oaree yarn. l t will also be notedthat this rhtl ige in the seueitivelnees the detector in ellwted by parts which are not in con tart n'ithftheyarn and that thedetector and rontrollm"rod ret in thesalne setting for the varying degrees of sensitiveness. l

Having thus dertribed my inventioii it will be hpphrent that changes and nloditiea tione niay he niude there in by those elii lled in i the art Without departing from the spirit and nropo ("it the invention and 1 do not \i'ieli' to be limited to tho detailwhereindiseloeed; but what; I claim in: y i

1. In a loom having =15 plurality of shift int; ahuttle boxer; and ahuttles eaoh (a? which may bet-onto active and each ol said shuttles being provided Witha bobbin having a reiae tivol v movable nieniber tho'recnu a de'teetor depeiiding upon the relative lllOVClllGllll or the number with reapeot to the bobbin to give indication of :siubetantial \ve'l't enhaue tion, and uroulintunder rontrol ol the shuttle bones to exert a rurfabie pieneure on aaid uwinher tending to move the same relatively to the bobbin. i J. In a loom ll:l\ltl;'l a plurality of shlttinn nhuttle bones and shuttles eaoh of whieli may beronie aotiveand diohoteaidshuttles being:provided with a bobbin having relatively i.uo\'ableuienibers thereon, a detector depending upon the separation oftheauenlhere on the. bobbin to give indicationof sub t etentialwett exhaustion and means under eontrol ot the shuttle bones to VHIjfhlIBIDTGS- euro tending: to eeparate said members.

In a 100111 having a plurality ofshift is provided with a bobbinhaiving :rniember movable thereon, a detector moved to inrue; ehuttle boxes and Shuttles eachof ivhioh operative position when engaged by said movable member when the latter is in normal position and effective to give indication of wett exhaustion when said-member moves with respect to the bobbin, and means under control of the shuttle boxes tovvary the force tending to move to the bobbin.

4. In' a loomhaving a plurality of shifting shuttle boxes and shuttles each of which may become active, a detecting mechanism formed in part by a member mounted independently of the shuttle and in part by a member carried by the shuttle and tending tomove withrespect to the shuttle under influence of the first named member, and means under control of the shuttle boxes to vary the tendency of the first named member to move the second named member with respect to the shuttle. V I

5. In a loom having shuttle boxes for a plurality of shuttles each of. which may be come active, a control member moving with the shuttle boxes and assuming dilierent positions depending upon which shuttle is acsaid member with respect shifting shuttle boxes to vary the pressure of the detector against the rings.

8. In a loom having shifting shuttle boxes for a' plurality of shuttles which may be come active one at a time, a control member moving with the shuttle boxes and assuming diiferent positions depending upon the position of the shifting boxes, a detector to cooperate with each shuttle when active, a member carried by each shuttle movable with respect to the shuttle at substantial weft exiaustion under influence of the detector, and a a single resilient device interposed between shuttlevhaving a member movable with retire, a detector to cooperate with each shut-' tlewhen' active, a member carried by each shuttle movable with respect to the shuttie at substantial weft exhaustion under infiuence of the detector, and means under control of the shuttle boxes tovary the tendency of the detector to move the member in'the 7 active shuttle.

6. In a detector mechanism for looms operating with a plurality of shuttle boxes and shuttles each of which is provided with a bobbin having a portion occupied by yarn and a movable port-ion free from yarn, a deto accommodate a plurality of shuttles each of which may becomeactive, a bobbin located in each shuttle having rings slidably mount-- ed thereon, a detector to cooperate with the spect to theshuttle to be engaged by the first named member and tending to move under influence thereof, and means acting in timed relation with the shuttle boxes and dependent upon which shuttle box is in active position to vary the force exerted by the sta tionary member on the movable shuttle member, said stationary member of the detector giving an indication of weft exhaustion when the shuttle membermoves under infiu' ence of the stationary detector.

10. In a loom having a plurality of shuttle boxes and shuttles each of which may become active and each of which is provided with a bobbinv havingv beveled'rings slideably mounted thereon, a detector to engage the beveled rings of each shuttle when active to exert a pressure thereon longitudinally of the bobbin, means acting in timed relation rings on the bobbins of the active shuttle to indicate substantial weft exhaustion, and means dependent upon the position of the with the active shuttle and dependent upon which shuttle box is active to vary the pressure exerted against the beveled rings of the active shuttle, and means to give an indication of weft exhaustion when the rings move longitudinally of the bobbin.

In testimony whereof I have hereunto affixed my signature.

WALTER I-I. WAKEFIELD. 

